Results 171 to 180 of about 3,837 (213)

Photodegradation of polyoxymethylene

Polymer Photochemistry, 1981
Abstract The effect of photo-irradiation conditions on the photodegradation of polyoxymethylene is examined by the changes in mechanical property, weight loss, infra-red-, ultra-violet- and luminescence spectra and surface appearance of the polymer. The photodegradation of the polymer is extremely susceptible to the wavelength of the irradiated light.
O. Nishimura, Z. Osawa
openaire   +1 more source

Photodegradation

2015
Photodegradationconcerns the breaking of a molecule to smaller molecules (degradation and/or mineralization) by means of the absorption of photons of suitable wavelength such as that found in the infrared radiation, visible light and ultraviolet light of the solar spectrum.
openaire   +2 more sources

Photodegradation of calixarenes

Dyes and Pigments, 1996
Calixarenes are interesting compounds with respect to their high melting points and complexing properties. Spectroscopic characteristics and photochemical stability data are reported in these present studies of quantum yield of fluorescence, phosphorescence and photodegradation. The photodegradation occurs from the triplet state.
P. Méallier, A. Gudefin, N. Ehlinger, M. Perrin   +3 more
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Photodegradation and photostabilization of polymers

Journal of Photochemistry, 1984
L'origine des impuretes photosensibilisantes dans les polymeres. Photostabilisation des polymeres.
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Photodegradation of polyolefins

[1991] Proceedings of the 3rd International Conference on Properties and Applications of Dielectric Materials, 2002
The photodegradation behavior of a propylene/ethylene copolymer has been investigated and compared to the degradation of a polypropylene homopolymer. The materials contained small amounts of thermal stabilizers, but no photo-stabilizers. The development of carbonyl and hydroxyl oxidation species was followed by infrared spectroscopy, but this was not a
M.E. Austin, D.J.T. Hill, J.H. O'Donnell, P.J. Pomery   +3 more
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Photodegradation of leptophos

Bulletin of Environmental Contamination and Toxicology, 1979
M R, Riskallah, E G, Esaac, M M, El-Sayed   +2 more
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PHOTODEGRADATION OF DACARBAZINE

The Lancet, 1978
G M, Baird, M L, Willoughby
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Photodegradation of PVC

1984
Most commercial polymers undergo chemical and physical modifications when they are exposed for a long time to the combined action of sunlight, atmospheric oxygen, moisture and pollutants. The extent of this degradation depends primarily on the presence within the polymer of light-absorbing structures.
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PHOTODEGRADATION OF HYDROXYCHLOROTHALONIL IN AQUEOUS SOLUTIONS

Environmental Toxicology and Chemistry, 2001
Abstract Hydroxychlorothalonil is the principal degradation product of the fungicide chlorothalonil in soil, and it is routinely detected in leachate from golf course greens at concentrations as high as 2 ppm. However, it is not detected in receiving waters of shallow ponds.
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Photodegradation of organic micropollutants in aquatic environment: Importance, factors and processes

Water Research, 2023
Chihiro Yoshimura, Zhongyu Guo, Jieqiong Wang   +2 more
exaly